My good friend Ed sent me a fascinating optical illusion that I had never seen before. Because it’s visual I won’t try to explain so just play the 82-second embedded video below. Interesting!

If the video doesn’t play for you (I’m using an embedded media player so not all browsers will work) here’s a URL to the same video on YouTube that you can copy and paste into the address bar of your browser:

http://www.youtube.com/watch?v=fUmGrtAJX_Q

Ed and I met when we were in the same dorm as undergraduates at U.C. Irvine. We were roommates for several years and we both worked at Disneyland. We made many road trips to Las Vegas where we were card-counters at Blackjack in the days when you could make money doing so. Eventually we became adults and Ed moved to Indianapolis where he worked as a programmer for a company that manages company pensions and retirement funds. We had lots of amazing adventures together.